I've been experimenting with different macaron techniques for quite a while now (about 3-4 years). I've learned the Italian method gives the best results for me. I typically bake for fun and have never done an order for an event. One of my friends has asked me to make these picky little cookies for a baby shower and I'm nervous about it. Since this time it actually matters that it comes out right and perfect.\n\nMost recipes I find, I usually cut the recipe in half or have extra batter that doesn't make it onto my two trays and I just toss the extra batter. But since I'm making a larger order, I want to know if I can pipe the extra batter onto parchment paper and let it sit till the rest are done baking in the oven. I typically pipe the macarons out and let it sit for about 30 minutes to create the film. Will the macarons still have the same results if they sit for a longer time? From the time when I pipe them all out, bake the first two trays, then put the rest in the oven? Or should I stick to keep making half a recipe?